Results 71 to 80 of about 1,584,949 (308)

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

Tough, Ductile, and Strong Hard‐Soft Cementitious Composite Enabled by Multi‐Material Additive Manufacturing

open access: yesAdvanced Materials, EarlyView.
Drawing inspiration from the layered hard‐soft architecture found in sea sponges, this work establishes a new framework for architected cementitious composites (ACC) through multi‐material additive manufacturing (MMAM) process. The integration of mortar and elastomer phases into layered architectures enables synergistic toughening mechanisms, including
Aimane Najmeddine   +5 more
wiley   +1 more source

Elastomeric Micro‐Balloons for Remote Control of Cerebral Blood Flow and Real‐Time In vivo Imaging of Rodent Brain Response to Hypoperfusion

open access: yesAdvanced Materials, EarlyView.
This study reports the fabrication of MRI‐compatible elastomeric micro‐balloons via a multi‐step bubble casting process, where the monolithic elastomeric wall is selectively stiffened for reversible and controlled inflation and elasticity, depending on the target vessels for graded occlusion of cerebral arteries.
Jong Bin Kim   +10 more
wiley   +1 more source

Unions: Rent Extractors or Creators? [PDF]

open access: yes, 2004
Unions: Rent Extractors or ...
Aidt, Toke S., Sena, Vania
core   +1 more source

Actuation of Cell Layers in Three Dimensions

open access: yesAdvanced Materials, EarlyView.
ABSTRACT The alignment of fibers and cells in living tissues affect their mechanical properties and functionality. In this context, one can draw an analogy between tissues and nematic liquid crystal elastomers. We explore this analogy by growing fibroblasts on 2D‐patterned substrates and observing the contraction of cell sheets upon detachment from the
Kirsten Endresen   +6 more
wiley   +1 more source

Collective action and symbolic capital in the artisanal fisheries: An analysis of the Local Food Systems of Reloncaví Estuary (Los Lagos), Chile

open access: yesCulture & History Digital Journal, 2016
In a post-industrial economy, it is as important to understand “material” productive processes in the local community as the processes through which global value chains “expropriate” or “co-opt” common immaterial assets.
Gonzalo Saavedra Gallo   +1 more
doaj   +1 more source

Recent Advances in Electrospun Nanofibers for Triboelectric Nanogenerators: Performance Enhancement Strategies and Emerging Applications

open access: yesAdvanced Materials, EarlyView.
This review highlights recent advances in electrospun nanofiber‐based triboelectric nanogenerators, emphasizing how material design, fiber architecture, and interface engineering collectively enhance output performance and mechanical durability. Key developments in porous, aligned, core‐shell, and hierarchical nanofibers are discussed alongside ...
MD Fajla Rabbi   +3 more
wiley   +1 more source

Competition and Performance: The Different Roles of Capital and Labor [PDF]

open access: yes
Neoclassical economists argue that competition promotes efficiency. They consider technology as given though. In the long run technological progress is an important determinant of the level of welfare and Schumpeter argued that monopoly rents help ...
Mohnen,Pierre, Raa,Thijs,ten
core   +4 more sources

Impact of natural resources rents on green growth: evidence from G7 countries

open access: yesFrontiers in Environmental Science
Climate change has become a global issue in the 21st century due to the excessive use of non-renewable energy sources. To mitigate this issue, the world has been shifting towards green growth. For this purpose, researchers and policymakers are struggling
Jiangyunze Qian, Lai Chen
doaj   +1 more source

Financial Support of the Forestry Complex Development Priorities: Diversification of Forms and Means [PDF]

open access: yesProblemi Ekonomiki, 2016
It is found that at the present stage the funding of the forestry complex development priorities occurs in the following forms: 1) the budget financing of reforestation; 2) financial support of forestry and forest protection projects with the use of ...
Golyan Vasyl A., Holub Oleh A.
doaj  

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